#!/usr/bin/python
#
# Copyright (c) 2008, Mathias Weber
# Copyright (c) 2008, Thomas Stauffer
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this
#   list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright notice,
#   this list of conditions and the following disclaimer in the documentation
#   and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# $Id$

import sys
import math

from pandac.PandaModules import ShaderPool

import direct.directbase.DirectStart

base.setBackgroundColor(0.0, 0.0, 0.2)
base.disableMouse()

SIZE = 20

camera.setHpr(0.0, -90.0, 0.0)
camera.setPos((SIZE - 1) * 0.5, (SIZE - 1) * 0.5, 50.0)

world = render.attachNewNode("World")

for y in range(SIZE):
    for x in range(SIZE):
        planeNode = loader.loadModel("plane")
        planeNode.reparentTo(world)
        planeNode.setPos(x, y, 0.0)
        planeNode.setColor(0.0, 0.0, 1.0, 1.0)

def clearShader():
    """
    Also clears the shader pool. Advantage: If you load the shader once more it
    is reloaded from the disk, therefore you can modify it, without restarting
    this application.
    """
    world.clearShader()
    ShaderPool.releaseAllShaders()

def loadShader():
    """
    Just an idea. ShaderPool has a static method verifyShader. If you verify the
    shader first you can create an appropriate warning.
    """
    shader = loader.loadShader("example-shader.sha")
    world.setShader(shader)

base.accept("escape", sys.exit)
base.accept("a", render.analyze)
base.accept("o", base.oobe)
base.accept("1", loadShader)
base.accept("2", clearShader)

run()
